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authorNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>2014-06-24 00:22:03 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-24 03:47:43 +0400
commit4a705fef986231a3e7a6b1a6d3c37025f021f49f (patch)
tree540d2a129fa06a8441050071a2a2fa53f953bc41 /CREDITS
parent13ace4d0d9db40e10ecd66dfda14e297571be813 (diff)
downloadlinux-4a705fef986231a3e7a6b1a6d3c37025f021f49f.tar.xz
hugetlb: fix copy_hugetlb_page_range() to handle migration/hwpoisoned entry
There's a race between fork() and hugepage migration, as a result we try to "dereference" a swap entry as a normal pte, causing kernel panic. The cause of the problem is that copy_hugetlb_page_range() can't handle "swap entry" family (migration entry and hwpoisoned entry) so let's fix it. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Acked-by: Hugh Dickins <hughd@google.com> Cc: Christoph Lameter <cl@linux.com> Cc: <stable@vger.kernel.org> [2.6.37+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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